Subbase for cluster-sockets.



R. B. BENJAMN.

UBBASE POR CLUSTER SOGKETS.

nwnn Nov. 14, 1913.

APPLTON FLBD JULY 6, 1909. BEN 1,102,383, Patn'ed July 7, 1914.

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UNITED srirresrafrnnfr orare REUBN B. BENJAMIN, 0F CHICAGO, ILLINOIS, ASSIGNOR TO BENJAMIN ELECTRIC MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A* CORPQBATION 0F ILLNOIS.

SUBBASE FOR CLUSTERPSOCKET'S.

Specification of Letters Patent.

Application filed July 6, 1909, Serial No. 506,114. RenewedANm/ember 14, 1913. Serial No. 801,053.

To all whom, 'it may conferir Be it known that LREUBEN B. lli-mamon, a citizen of the United States, residing at Chicago, in the county of Cool; and State ot' Illinois, have invented new and useful iinproveinents `in Subbases for Cluster-Soelnls, of which the followingv is a full, Clear., rou-A cise, and exact description, reterenie being; had to the accompanying drawing, forming a part of this speeitieatiou.

This invention relates to iu'iprovenients in sub-bases for plural or cluster latini-holding devices, the principal object of the invention being to provide simple and ellirieut means for supportinglr a reflector or shade whirh extends over the plural socket and the lamps carried tliereby.

In the accompanying drawings, Figure l shows the device in use, the retlertor, non

tions of the sulrbase, and the bark plate ot the cluster socket being in section, while the socket and the resty ot the lamps are shown in elevation; Fig. is a persieetive view ot the sub-base without the lan'ip-holding device or lamps, and Fig. Il is au elevational edge View of a shade-supp nting ringy used in connection with this sub-base- In the several igures, in whieh like reterenee numerals indicate the :saine parts throughout, 5 is a ring'shaped plate whit-h is designed to be secured to the eeilinfgj ot' a looin or to soule other suitable support, b v means of screws t3, (t. In some eases il may be desired to support. the derive upon the cover which is provided upon the lower side of an outlet box, and as there are outlet boxes ot different sizes in common use the holes through which the screws (3, (3 are .shown as passing are set Closer together than are the holes 7, 7. The holesv in whieh are arranged screws t, l are intended for use with one size of outlet. box in oonunrui use, while the. holes 7, 7 are for use with a-larger size of outlet box. llxtending downward from the inner edge of the thing-je plate o is :L hollow shell having serow threads rolled or otherwise formed thereon. This shell is cup-shaped and is: provided in its bottoni with three. openings t), l() a d il through which the supply wires may be led down into the cluster soeket l2 and secured to the binding' terminals lhereot. Secured to the inner side of the bottom of this shell is a plate 13 of heavy uniti-rial havingY its iniddle portion perforated and the metal around l be employed the edge of the perforzltion stamped outwardly to form a collar 14, this collar being terward interiorly threaded to receive a pipe or the like when it is desired to support the cluster socket by means of a short pipe, as is sometimes done'. This collar l projects through a. suitable, opening in the center ot the bottoni of lthe cup-shaped part. 8, the plato 'i3 being held Vin position by a rivet 15. The plate '1.3 and the bottom of the cupshaped part are perforated for the reception of screws 1G and 17, these openings being;r screw threaded. The screws 1G and 1T are provided for :securingI the back plate lts ot' the elustei'soeket to the under side of the cup-shaped part when this method is to A pair of rings 19, of the forni'shown in Fig. 3, extend around the cup-shaped part tl ofthe device, beiner threaded so as to be adjustable up and down on said part by rotation of the. rings. Each oi these rings hasI au outwardly extending tlangeg() provided with an upturued edge 2l. lVhen the rings are placed in position, the upper one is ii'i verted, as clearly shown inlfig. l. The retleetor 22 .may be of the usual Vtorni and has its inner edge turned ontwardly and slightly upward at Q3. By serewing the upper ring lll down upon the shadel the latter is firmly held in position, because the flaring edge 23 rests within the inverted cup-shaped flange 20 ot the. ring;- 18), while the outer edge. of the lower ring; bears against the under side ot' the shade and supper $3 the same. As the rings l) are adjustable, tip anddown on the sub-base, it is possibile to 'f accommodate shades wllieh vary slightly from the standard in thickness and in the height of the part which is confined between the rings ll), Vl il. Y

lla-ring thus described in v invention. what elaini as new and desire to sefrure by Letters Patent, is.: n

l. '.l`he combination ot' a ruiyshaped body havingr exterior serew lthreads, means for soeur-ing; a plural lamp .socket to the under side of said body. a nd means for holding a retieetor1 said means eompris'ing a pair of threaded rings o'n said body having each a tiange extendingr outward .troni said body, said anges being arranged to grip the retleetor between them. i

3. The combination of a threaded cupshaped shellhaving an outwardly extending and havin flange perforated for the passage of securing means, a pair of threaded rings screwed upon said shell and having each an outwardly extending flange, said flanges being adapted to receive a reflector between them, and means for securing a lamp-holding device to the under side of said shell.

3. The combination of a cup-shaped shell having an outwardly extending flange perforated for the passage of securing means, a pair of rings extending around said shell each an outwardly extending "flange, eac of said rings being mounted so as to be capable of upward and downward adjustment upon said shell, said flanges being adapted to receive a reflector between them, and means for securing .a lamp-holding device to the under side of said shell.

4. The combination of a cup-shaped shell having threads rolled thereon, a fiange at the upper edge'of said shell, means for securing a lamp-holding device to said shell, and a air of rings threaded upon said shell and a apted t0 receive a reflector between them.

In witness whereof, I have hereunto subscribed my name in the presence of two witnesses. REUBEN B. BENJAMIN. Witnesses :A

M. L. FARRAR, C. L. HOPKINS. 

